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THE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS

Rivista di Medicina, Traumatologia e Psicologia dello Sport


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Journal of Sports Medicine and Physical Fitness 2009 June;49(2):194-200

lingua: Inglese

Alterations in maximal inspiratory mouth pressure during a 400-m maximum effort front-crawl swimming trial

Thomaidis S. P. 1, Toubekis A. G. 1, Mpousmoukilia S. S. 2, Douda H. T. 1, Antoniou P. D. 1, Tokmakidis S. P. 1

1 Democritus University of Thrace Department of Physical Education and Sport Science
Komotini, Greece
2 Kavala General Hospital, 2nd Pulmonary Clinic, Kavala, Greece


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Aim. The aim of this study was to examine the changes of maximal inspiratory mouth pressure (PImax) during a 400-m front crawl swimming trial.
Methods. Eleven well-trained competitive swimmers (age: 17.6±0.8 years, mean±SE) performed a 400-m front-crawl trial with maximum effort (296.2±4.76 s). Then, on different days they swam a 300-m, 200-m and 100-m trials at a velocity corresponding to the 400-m trial. Measurements of PImax from residual volume at upright body position before and immediately after each trial were conducted using a portable mouth pressure meter.
Results. Maximal inspiratory mouth pressure did not change significantly after the 100-m and 200-m trial compared to baseline (131.8±9.7 and 123.7±10.3 vs. 140.9±8.9 cmH2O, P>0.05). However, PImax was significantly lower after the 300-m (118.8±7 cmH2O, P=0.02) and 400-m trials (118.1±9.9 cmH2O, P=0.01).
Conclusions. These results indicate that during a maximum effort of 400-m front crawl, the reduction of inspiratory muscle strength occurs after 300-m. This should be considered for competitive swimming training by implementing swim race distance-specific respiratory muscle training.

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